All categories

3 years ago

Please helppp!!! Is the set of positive irrational numbers closed for the operation of division? If not, give a counter-example.

2 answers:

7 0

Irrational numbers are "not closed" under addition, subtraction, multiplication or division. The numbers that are in the set of Complex Numbers, but are not in the set of Real Numbers .the imaginary number, i, which is the square root of negative one.

Mamont248 [21]3 years ago

4 0

Irriational numbers are not closed

You might be interested in

Please Help me solve these problems.

Harman [31]

Which question? The picture is black

5 0

2 years ago

3 decagrams = centgrams

notsponge [240]

Answer:

3,000

Step-by-step explanation:

Just multiply every decagram by 1,000

7 0

3 years ago

Solve for x when, 8x-12=4x

barxatty [35]

Answer:

x=3

Step-by-step explanation:

8x - 12 = 4x add 12 to both sides you get 8x=4x+12 subtract 4x on both sides then you get 4x=12 divide 4x on both sides and x = 3 Hope helps!!

8x-12=4x

+12 +12

__________

8x=4x+12

-4x -4x

_______-

4x=12

÷4 ÷4

______

x=3

Hope helps :3

4 0

2 years ago

Read 2 more answers

Eric is studying people's typing habits. He surveyed 525 people and asked whether they leave one space or two spaces after a per

Otrada [13]

Answer: (0.8115, 0.8645)

Step-by-step explanation:

Let p be the proportion of people who leave one space after a period.

Given: Sample size : n= 525

Number of people responded that they leave one space. =440

i.e. sample proportion: $\hat{p}=\dfrac{440}{525}\approx0.838$

z-score for 90% confidence level : 1.645

Formula to find the confidence interval :

$\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$0.838\pm (1.645)\sqrt{\dfrac{0.838(1-0.838)}{525}}\\\\=0.838\pm (1.645)\sqrt{0.00025858285}\\\\=0.838\pm (1.645)(0.01608)\\\\= 0.838\pm0.0265\\\\=(0.838-0.0265,\ 0.838+0.0265)\\\\=(0.8115,\ 0.8645)$

Hence, a 90% confidence interval for the proportion of people who leave one space after a period: (0.8115, 0.8645)

3 0

3 years ago

What kind of food do math teachers eat

Vitek1552 [10]

Answer:

Food.

Step-by-step explanation:

They could eat anything, really.

4 0

3 years ago

Read 2 more answers